ValidationResultElseIfBuilder.kt

public class ValidationResultElseIfBuilder(
  public val parent: ValidationResult
) {
  public lateinit var result: Success

  public inline fun InvalidEmailAddress(block: (errorMessage: String) -> Success): Unit {
    if(parent is InvalidEmailAddress) {
      result = block(parent.errorMessage)
    }
  }

  public inline fun EmptySubject(block: (errorMessage: String) -> Success): Unit {
    if(parent is EmptySubject) {
      result = block(parent.errorMessage)
    }
  }

  public inline fun EmptyBody(block: (errorMessage: String) -> Success): Unit {
    if(parent is EmptyBody) {
      result = block(parent.errorMessage)
    }
  }
}